CN109964549B

CN109964549B - Electrical box

Info

Publication number: CN109964549B
Application number: CN201780053441.XA
Authority: CN
Inventors: 西田光德
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2016-11-22
Filing date: 2017-02-23
Publication date: 2021-09-21
Anticipated expiration: 2037-02-23
Also published as: CN109964549A; WO2018096697A1; JPWO2018096697A1; JP6856663B2

Abstract

The invention provides an electrical box (20), comprising: a substrate installation part (21) on which the electric device substrate is arranged; and a wire mounting part (wiring mounting part) (22) to which a power supply wire (wiring) (90) connected to the electrical substrate is mounted. The wire attachment section (22) has a plate-like member, a first guide section (41), a second guide section (42), and a protrusion section (43). The first guide part (41) is formed to protrude from the plate-like member and is disposed on the upstream side of the power supply wire (90). The second guide part (42) is formed to protrude from the plate-like member and is disposed downstream of the power supply wire (90). The protrusion (43) is disposed between the first guide section (41) and the second guide section (42), and changes the direction of travel of the power supply wire (90). The first guide section (41) and the second guide section (42) are provided with eaves at the tops thereof.

Description

Electrical box

Technical Field

The present invention relates to an electrical box provided in an indoor unit of an air conditioner.

Background

An air conditioner generally includes an indoor unit (indoor unit) disposed indoors and an outdoor unit (outdoor unit) disposed outdoors. The units are connected to each other by coolant pipes and electric wiring. In addition, the indoor unit is provided with a power supply cable having a plug for connecting to a power supply at a distal end portion. The electric wiring and the power supply wire are connected to an electric substrate for controlling the air conditioner.

The indoor unit includes an electrical box (also referred to as an electrical component box) for holding and fixing the electrical substrate. A plurality of electric wires and power supply wires are connected to the electric substrate in the electric box. Therefore, in the electrical box, it is desired to provide the electrical wiring and the power supply wire (power supply wiring) at appropriate positions (that is, to the extent that the quality of the power supply wire is not adversely affected, the power supply wire is attached to the device in a state of not being moved). In particular, in order to secure sufficient tensile strength in view of safety, a power supply wire for supplying power to the indoor unit is attached to the electrical box without being displaced by using a fixing member such as a screw or a wire clip.

Patent document 1 proposes that a power supply wire and an electric wiring can be fixed without using a wire clip. The air conditioner disclosed in patent document 1 includes, as a configuration for arranging a power supply wire: a gap part 10 which is arranged between the peripheral surface part of the rear plate of the unit main body and the front surface plate and through which a power supply wire K extending from the electric component box is inserted; and a guide boss part 12 which is provided to protrude from the rear plate peripheral surface part toward the gap part and limits the position of the middle part of the power supply wire inserted into the gap part.

Documents of the prior art

Patent document

Japanese laid-open patent publication No. 10-110970

Disclosure of Invention

Technical problem to be solved by the invention

However, in a configuration in which a power supply wire is fixed using a component different from an electrical component box (electrical box), such as a screw or a wire clip, the fixing force varies due to variation in the combination of the components. Therefore, the power supply wire is not completely positioned and is in an unstable state until the assembly of the product is completed. Therefore, for example, during transportation of the electrical box during assembly, a problem arises in that the power supply wire is displaced from a predetermined position.

The thickness (diameter) and hardness of the power supply wire vary depending on the voltage and current. When such different types of power supply wires are mounted in an electrical component box (electrical box) having a structure as described in patent document 1, for example, the size of the gap portion is constant, and therefore, it is possible to easily mount the power supply wire having a small diameter and being relatively flexible. In the case of a different electrical component box (electrical box) having a larger gap portion, the fixing force of the relatively flexible power supply wire having a small diameter is weak, and the wire tends to be deviated during transportation.

Accordingly, an object of one aspect of the present invention is to provide an electrical box capable of providing a plurality of types of wires such as power supply wires at appropriate positions.

Means for solving the problems

An electrical box according to an aspect of the present invention accommodates an electrical substrate. The electrical box includes: a substrate installation part, which is provided with an electric device substrate; and a wiring installation part for installing the wiring connected with the electric substrate. The wiring installation part is provided with: a plate-like member; a first guide portion protruding from the plate-like member and arranged on an upstream side of the wiring; a second guide portion protruding from the plate-like member and arranged on a downstream side of the wiring; and a protrusion portion disposed between the first guide portion and the second guide portion and changing a traveling direction of the wiring. Further, the first guide portion and the second guide portion are provided with eaves at top portions thereof, respectively.

Effects of the invention

An electrical box according to an aspect of the present invention can provide a plurality of types of wiring at appropriate positions.

Drawings

Fig. 1 is a perspective view showing an external appearance of an indoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 2 is a perspective view showing a state in which a front panel of the indoor unit shown in fig. 1 is opened.

Fig. 3 is a perspective view showing an internal configuration of the indoor unit shown in fig. 1. In the figure, the external appearance configuration of the electrical box disposed at the side portion of the indoor unit is shown.

Fig. 4 is a perspective view showing an electrical box provided in the indoor unit shown in fig. 1.

Fig. 5 is a perspective view showing an electrical box provided in the indoor unit shown in fig. 1.

Fig. 6 is a cross-sectional view showing the structure of the line a-a of the electrical box shown in fig. 4. In this figure, a structure of a wire mounting portion provided in an electrical box is shown.

Fig. 7 is a cross-sectional view showing the structure of the line B-B of the electrical box shown in fig. 5. In this figure, a structure of a wire mounting portion provided in an electrical box is shown.

Fig. 8 is a side view showing a state in which a small-diameter power supply wire is mounted in an electrical box according to an embodiment of the present invention.

Fig. 9 is a side view showing a state in which a large-diameter power supply wire is attached to an electrical box according to an embodiment of the present invention.

Fig. 10 is a side view showing a structure of an electrical box according to a second embodiment. In the figure, a state is shown in which a power supply wire with a ferrite core is mounted in an electrical box.

Fig. 11 is a side view showing a structure of an electrical box according to a second embodiment. The figure is a view of the electrical box of fig. 10 viewed from a different direction.

Fig. 12 is a perspective view showing a structure of a wire mounting portion of the electrical box shown in fig. 10.

Fig. 13 is a cross-sectional view showing a structure of an electrical box according to a third embodiment. This figure shows a structure of a portion corresponding to the structure of the a-a line of the electrical box shown in fig. 4.

Fig. 14 is a side view showing a structure of an electrical box according to the fourth embodiment.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Thus, detailed description thereof will not be repeated.

[ first embodiment ]

In the first embodiment, an air conditioner including an electric box according to an example of the present invention will be described as an example. In the present embodiment, a power supply wire is described as an example of a wiring mounted on an electrical box. However, in one embodiment of the present invention, the present invention can also be applied to a case where a wiring other than the power supply wire is mounted.

Fig. 1 shows an external configuration of an indoor unit 1 of an air conditioner according to the present embodiment. Fig. 2 shows a state in which the front panel 11 of the indoor unit 1 is opened. Fig. 3 shows an internal structure of the indoor unit 1.

< integral Structure of air conditioner >

First, the overall configuration of the air conditioner according to the present embodiment will be described. The air conditioner according to the present embodiment is a separate type air conditioner, and is mainly composed of an indoor unit 1 and an outdoor unit (not shown).

The outdoor unit is provided with a compressor, an outdoor heat exchanger, a four-way valve, an outdoor fan, and the like. These components form a refrigeration cycle together with the indoor heat exchanger 17 (see fig. 3) provided on the indoor unit 1 side.

Next, the structure of the indoor unit 1 will be described with reference to fig. 1, 2, and 3. As shown in fig. 1, the indoor unit 1 has a substantially rectangular parallelepiped shape, and is generally used by being attached to an upper portion of a wall of a house. As described above, the indoor unit 1 includes the indoor heat exchanger 17. The indoor-side heat exchanger 17 is connected to a compressor or the like on the outdoor unit side via a refrigerant pipe (not shown). Thus, the indoor unit 1 and the outdoor unit constitute a refrigeration cycle, and as a result, function as an air conditioner. Further, a control unit that controls the refrigeration cycle is provided in an electrical box 20 (see fig. 2) in the indoor unit 1.

As shown in fig. 2, the indoor unit 1 mainly includes a casing 10, an electrical box 20, an indoor-side heat exchanger 17, a filter (not shown), and the like. Hereinafter, each of the above-described constituent members will be described.

The housing 10 is a substantially rectangular parallelepiped resin molded product. As shown in fig. 1, the enclosure 10 is mainly composed of a front panel 11, a main body panel 12, and a rear panel 13. As shown in fig. 2, the indoor-side heat exchanger 17, the electrical box 20, and the like are housed inside the enclosure 10. Further, although not shown, a filter is provided between the front surface panel 11 and the indoor-side heat exchanger 17.

For convenience of explanation, the side on which the front panel 11 is disposed is the front side of the indoor unit 1, and the side on which the rear panel 13 is disposed is the rear side of the indoor unit 1. The direction from the front surface side to the back surface side of the indoor unit 1 or the direction from the back surface side to the front surface side is referred to as the front-rear direction (Z direction in fig. 3). In a normal installation state of the indoor unit 1, a direction from above to below or from below to above is referred to as a vertical direction or a vertical direction (Y direction in fig. 3). The direction intersecting with or orthogonal to the vertical direction is referred to as a horizontal direction or a horizontal direction (X direction in fig. 3). In a state where the front panel 11 is viewed from the front, the side surface of the indoor unit 1 positioned on the right side is referred to as a right side surface, and the side surface of the indoor unit 1 positioned on the left side is referred to as a left side surface.

A suction port 14 is provided on the upper surface of the housing 10. The indoor air in which the indoor unit 1 is installed is taken into the indoor unit 1 through the air inlet 14. A filter is disposed immediately below the suction port 14.

The front panel 11 is located on the front surface (front surface) of the enclosure 10. The front panel 11 is attached to the main body panel 12 so as to be openable and closable. Fig. 2 shows a state where the front surface panel 11 is opened. Normally, the filter is present on the front surface portion in a state where the front surface panel 11 is opened, but the filter is not shown in fig. 2. Therefore, fig. 2 shows the indoor-side heat exchanger 17 located on the back surface side of the filter. In the present embodiment, the electrical box 20 is disposed in the right side portion in the casing 10 of the indoor unit 1.

A blow-out port for sending out air sucked in from the suction port is provided in a lower portion of the main body panel 12, and the flap 15 is provided in the blow-out port so as to be openable and closable. A drive motor (not shown) is connected to the shutter 15. The drive motor is connected to the electrical board 29 in the electrical box 20 through an electrical wiring in a communication manner, and adjusts the rotation angle of the damper 15 in accordance with a control signal from a control unit provided in the electrical board 29 disposed in the electrical box 20 during operation of the air conditioner.

Further, a final outlet 13a of the power supply wire (wiring) 90 is formed below the back surface side of the right side surface portion of the back panel 13. The downstream side of the power cord 90 having a plug at the tip thereof protrudes from the final outlet 13a to the outside of the indoor unit 1. The position of the final outlet 13a of the power supply wire 90 described herein is an example of the present invention, and the present invention is not limited to this configuration.

The indoor-side heat exchanger 17 is formed by combining a plurality of heat exchangers like a roof (inverted V) covering a cross flow fan (not shown). Further, each heat exchanger has a plurality of fins (not shown) attached to heat transfer tubes (not shown) that are folded back multiple times at both left and right ends, and functions as an evaporator during the cooling operation and as a condenser during the heating operation.

The cross-flow fan is disposed below the rear surface of the indoor-side heat exchanger 17. The cross flow fan is coupled to a drive motor (not shown). The cross-flow fan is rotationally driven by the drive motor during operation of the air conditioner, sucks indoor air into the housing 10, supplies the air to the indoor-side heat exchanger 17, and sends out the air subjected to heat exchange by the indoor-side heat exchanger 17 into the room. The drive motor is connected to the electrical board 29 in the electrical box 20 through an electrical wiring line in a communication manner, and operates in accordance with a control signal transmitted from a control unit of the electrical board 29 provided in the electrical box 20.

The electrical box 20 is disposed at, for example, the right end portion in the housing 10. The electrical box 20 includes an electrical substrate 29. The electric substrate 29 is mounted with a central processing unit (control unit), a signal transmitting/receiving unit, and the like. The electrical board 29 in the electrical box 20 is connected to each component of the refrigeration cycle via electrical wiring. The control unit in the electric substrate 29 controls the refrigeration cycle based on the instruction of the user and detection signals from various sensors such as temperature sensors for detecting the room temperature and the outdoor air temperature, and performs the cooling operation, the heating operation, and the like. The arrangement position of the electrical box 20 in the indoor unit 1 according to the present embodiment is an example, and the present invention is not limited to this configuration.

The electric board 29 in the electric box 20 is also connected to a drive motor of the cross flow fan, a drive motor of the damper 15, a drive motor of the filter cleaning device (not shown), and the like via electric wiring. Further, a power supply cable 90 (see fig. 8) is connected to the electrical box 20. A plug connected to a power source is provided at the tip (most downstream side) of the power supply wire 90. Thereby, electric power can be supplied to the electric substrate 29 in the electric box 20 via the power supply wire 90. In the present specification, the upstream side of the power supply wire or the upstream side of the power supply wire in the traveling direction refers to the side connected to the electrical substrate 29, and the downstream side of the power supply wire or the downstream side of the power supply wire in the traveling direction refers to the side where the plug is provided.

A filter (not shown) is provided between the suction port 14 and the indoor-side heat exchanger 17. The filter captures dust and dirt contained in the air taken into the indoor unit 1 through the suction port 14. This can reduce the amount of dust and dirt in the air taken into the indoor unit 1.

< Structure of Electrical Box >

Next, a more specific configuration of the electrical box 20 provided in the indoor unit 1 will be described with reference to fig. 4 to 7.

Fig. 4 and 5 are perspective views showing the electrical box 20. Fig. 4 shows a state where the left side of the electrical box 20 is viewed from below. Further, fig. 5 shows the structure of the left side face portion of the electrical box 20. In fig. 4 and 5, the positional relationship when the electrical box 20 is installed in the indoor unit 1 is indicated by XYZ arrows. The arrow X corresponds to the horizontal direction or the left-right direction of the indoor unit 1. The arrow Y corresponds to the vertical direction or the vertical direction of the indoor unit 1. The arrow Z corresponds to the front-rear direction of the indoor unit 1.

The electrical box 20 is, for example, a plastic resin molded body. As shown in fig. 4 and 5, the electrical box 20 is mainly composed of a substrate installation portion 21, an electric wire installation portion (wiring installation portion) 22, a front surface portion 23, a bottom portion 24, a ferrite core arrangement portion 26, and the like.

The substrate installation portion 21 has a substantially flat plate-like substrate placement plate 25. Fig. 4 and 5 show the left side surface of the substrate arrangement plate 25. The electric device board 29 is mounted along the right side surface of the board placement board 25 (see fig. 3).

The electric wire attachment portion 22 is a member for fixing the power supply electric wire 90 (see fig. 8 and the like) connected to the electric substrate 29 in a state of not moving to some extent. Here, fixing the power supply wire in a state of not moving to some extent means maintaining the power supply wire in a state of not moving to such an extent that the quality of the power supply wire is not adversely affected. The power supply wire 90 is attached to the wire attachment portion 22 in a positioned state. In the present embodiment, the wire attachment portion 22 is located below the substrate installation portion 21. However, the present invention is not limited thereto.

As described above, the most upstream portion of the power supply wire 90 is connected to the electrical substrate 29. The power supply wire 90 has a plug connected to a power supply on its tip end side (most downstream portion), and is configured to extend to the outside of the apparatus from a final outlet 13a provided below the rear surface side of the right side surface portion of the enclosure 10. Therefore, the electric wire attachment portion 22 is preferably provided at a position along the path of the power supply electric wire 90 from the electric substrate 29 to the final outlet 13a (i.e., in the middle of the path).

The front surface portion 23 constitutes a front side portion of the electrical box 20. As shown in fig. 2, when the front panel 11 of the enclosure 10 is opened, the front surface 23 is partially exposed.

The bottom 24 forms a bottom portion of the electrical box 20. The upper surface 24a of the bottom portion 24 is inclined downward from the front side toward the rear side. Power supply wires 90 are partially placed on the upper surface 24 a.

The ferrite core arrangement portion 26 is located on the rear surface side of the wire mounting portion 22. The ferrite core disposed portion 26 is mounted with a ferrite core arbitrarily attached to the power supply wire 90. In the present embodiment, the ferrite core arrangement portion 26 is provided with a wall portion 46 that restricts movement of the ferrite core in the left-right direction (the direction intersecting the plate-shaped member 51 (see fig. 6)).

In the electrical box 20, the first sensing portion 31, the second sensing portion 32, and the sensing wall 33 are provided in this order along the path of the power supply wire 90 from the electrical substrate 29. The first sensing portion 31 is formed on the rear surface of the front surface portion 23. The second sensing portion and the sensing wall 33 are formed on a plate-like member 51 described later. The sensing wall 33 is separated from the upper surface 24a of the bottom portion 24 by a predetermined distance and is disposed substantially parallel to the upper surface 24a of the bottom portion 24. Further, the end portion of the most downstream side of the inductive wall 33 is bent in the mounting direction of the power supply wire 90, and the bent portion thereof is rounded. That is, the bent portion has a curved shape. The first and second

inductive portions

31 and 32, the inductive wall 33, and the power supply wire 90 are led out from the electrical substrate 29 to the wire attachment portion 22. The predetermined distance is at least a distance through which the power supply wire 90 can pass.

In the electrical box 20, an outlet E of the power supply wire 90 is provided at a position corresponding to the most downstream side in the traveling direction of the power supply wire 90. In the present embodiment, the third guide portion 45 is provided as a structure for guiding the power supply wire 90 to the outlet E. As described later, the power supply wire 90 passing through the second guide portion 42 is restricted in its traveling direction by the third guide portion 45 and projects from the outlet E to the outside of the electrical box 20. The third guide portion 45 has a rounded shape along the mounting direction of the power supply wire 90. In the present embodiment, the third guide portion 45 has a cylindrical shape having an axis in the X direction (see fig. 4 and the like).

< Structure of electric wire mounting part >

Next, a specific configuration of the wire attaching portion 22 will be described with reference to fig. 4 to 7. Fig. 6 and 7 show a cross-sectional structure of the electrical box 20 at a portion where the wire attachment portion 22 is provided. In fig. 6 and 7, the positional relationship when the electrical box 20 is installed in the indoor unit 1 is indicated by XYZ arrows. The arrow X corresponds to the horizontal direction or the left-right direction of the indoor unit 1. The arrow Y corresponds to the vertical direction or the vertical direction of the indoor unit 1. The arrow Z corresponds to the front-rear direction of the indoor unit 1.

The wire attaching portion 22 mainly includes a plate-like member 51, a first guide portion 41, a second guide portion 42, a protrusion portion 43, and a side wall portion 44.

The plate-like member 51 is a base for arranging the components of the wire attaching portion 22 such as the first guide portion 41, the second guide portion 42, the protrusion portion 43, and the side wall portion 44. In other words, the first guide portion 41, the second guide portion 42, the protruding portion 43, and the side wall portion 44 are provided so as to protrude from the plate-like member 51 (see fig. 6). As shown in fig. 6, the plate-like member 51 is disposed substantially parallel to the substrate placement plate 25 with a height difference from the substrate placement plate 25.

The first guide portion 41 is disposed at the end portion of the most downstream side of the sensor wall 33. The first guide portion 41 is disposed on the upstream side of the power supply wire 90 of the wire attachment portion 22. Further, the second guide portion 42 is disposed on the downstream side of the power supply wire 90 with respect to the first guide portion 41. That is, the first guide portion 41 is provided on the upstream side (on the side closer to the electric component board 29) in the traveling direction of the power supply wire 90, and the second guide portion 42 is provided on the downstream side (on the side closer to the plug) in the traveling direction of the power supply wire 90.

A flange-like brim 41a is provided at the tip (top) of the first guide 41. Further, a flange-like brim 42a is provided at the tip (top) of the second guide 42. In the present embodiment, the eaves 41a of the first guide 41 and the eaves 42a of the second guide 42 are arranged so as to protrude from the main body portions of the

respective guides

41 and 42 with their distal ends facing each other (see fig. 8 and the like). When the power supply wire 90 is attached to the wire attachment portion 22, the power supply wire 90 passes under the eaves 41a of the first guide portion 41 and the eaves 42a of the second guide portion 42, respectively (see fig. 8 and the like). In addition, the body portion of the second guide portion 42 is formed in a rounded shape along the mounting direction of the power supply wire 90.

The protrusion 43 is disposed between the first guide portion 41 and the second guide portion 42 along the traveling direction of the power supply wire 90. The protrusion 43 is disposed at a position deviated from a virtual straight line connecting the first guide portion 41 and the second guide portion 42 (see fig. 8 and the like). In the present embodiment, the protrusion 43 is disposed at a position offset upward from a virtual straight line connecting the first guide portion 41 and the second guide portion 42, but may be disposed at a position offset downward from the virtual straight line. The power supply wire 90 is guided to the second guide portion 42 and the like through the upper side of the protrusion portion 43. In this way, the protrusion 43 functions to change the traveling direction of the power supply wire 90. In addition, the main body portion of the protruding portion 43 is formed in a rounded shape along the mounting direction of the power supply wire 90.

In the present embodiment, a flange-like brim portion 43a is also provided at the tip (top) of the protrusion portion 43. In one example, the eaves 43a is configured to protrude upward from the main body portion of the protrusion 43. The

eaves

41a, 42a, and 43a have rounded distal ends.

The side wall portion 44 is disposed above the protrusion portion 43. That is, the side wall portion 44 is disposed on the opposite side of the positions where the first guide portion 41 and the second guide portion 42 are disposed, with the projection portion 43 being sandwiched therebetween. In the present embodiment, the side wall portion 44 is constituted by a first side wall 44a and a second side wall 44b which are substantially parallel to each other. When the power supply wire 90b having a larger diameter is attached to the wire attachment portion 22, the power supply wire 90b passes through between the protrusion portion 43 and the side wall portion 44 (specifically, the first side wall 44a) (see fig. 9).

Next, the height from the plate-like member 51 constituting the first guide portion 41, the second guide portion 42, the protruding portion 43, and the side wall portion 44 of the wire attaching portion 22 will be described with reference to fig. 6 and 7.

As shown in fig. 7, in the present embodiment, the height H1 of the first guide portion 41 is substantially the same as the height H2 of the second guide portion. As shown in fig. 6, in the present embodiment, the height H1 of the first guide portion 41 is substantially the same as the height H4 of the side wall portion 44. That is, the height H1 of the first guide portion 41, the height H2 of the second guide portion, and the height H4 of the side wall portion 44 are substantially the same.

Preferably, the power supply wire 90 is attached to the wire attachment portion 22 so as to be positioned lower than the height H1 of the first guide portion 41, the height H2 of the second guide portion, and the height H4 of the side wall portion 44. That is, the heights H1, H2, and H4 are preferably defined in consideration of the diameter of the power supply wire 90 and the projection condition of the power supply wire 90 from the plate-like member 51. This can prevent various drive motors and the like disposed adjacent to the electrical box 20 from coming into contact with the power supply cable 90.

In the present embodiment, as shown in fig. 7, it is preferable that the height H3 of the protrusion 43 is lower than at least one of the height H1 of the first guide 41 and the height H2 of the second guide. According to this configuration, when the power supply wire 90a having a relatively small diameter is attached to the wire attachment portion 22, the power supply wire 90a can be disposed in the space between the brim portion 43a and the plate-like member 51 (see fig. 8). On the other hand, when the power supply wire 90b having a relatively large diameter is attached to the wire attachment portion 22, the power supply wire 90b can be passed above the brim portion 43a, for example, without passing through the space (see fig. 9). Therefore, the height H3 of the protrusion 43 may be set to match the width of the large-diameter power supply wire 90 b.

Further, the height H3 of the protrusion 43 can be set as follows. That is, when the power supply wire 90a having a small diameter is attached to the wire attachment portion 22, the power supply wire 90a can be disposed in the space between the brim portion 43a and the plate-like member 51, and when the power supply wire 90b having a large diameter is attached to the wire attachment portion 22, the power supply wire 90b can be set to have a height H3 that is a height that is such that the power supply wire 90b passes above the brim portion 43a without passing through the space. By setting the height H3 in this manner, it is possible to contribute to determining the type of electric wire to be attached.

As described above, according to the configuration of the present embodiment, the arrangement position of the wire attachment portion 22 can be changed according to the difference in diameter and hardness of each power supply wire. For example, the power supply wire 90a having a small diameter is disposed in the space between the brim 43a and the plate-like member 51, and thus can be prevented from being easily deviated from the wire attaching portion 22. Further, for example, the power supply wire 90b having a large diameter is passed above the eaves 43a, whereby the operator can easily attach the power supply wire 90b to the electrical box 20 at the time of assembly of the product.

Examples of the type of the power supply wire 90 include the following types.

That is, the small-diameter power supply wire 90a may be a power supply wire such as 100V15A or 100V 20A. Further, as the large-diameter power supply wire 90b, a power supply wire of 200V15A can be mentioned. In the present specification, the power supply wire 90 is described when various power supply wires are collectively referred to, the power supply wire 90a is described when a small diameter power supply wire is referred to, and the power supply wire 90b is described when a large diameter power supply wire is referred to.

< installation of Power supply wires having different diameters >

Next, a method of mounting two kinds of

power supply wires

90a and 90b having different diameters to the electrical box 20 will be described. Fig. 8 shows a state in which a small-diameter power supply wire 90a is attached to the electrical box 20. Fig. 9 shows a state in which the large-diameter power supply wire 90b is attached to the electrical box 20.

The upstream side of the power supply wires 90(90a and 90b) connected to the electric substrate 29 is led out along the first inductive portion 31 and the second inductive portion 32 to the passage between the inductive wall 33 and the upper surface 24a of the bottom portion 24. The power supply wires 90(90a and 90b) are led out to the wire attaching portion 22 through the passage between the inductive wall 33 and the upper surface 24 a. The path up to this point is shared by the small-diameter power supply wire 90a and the large-diameter power supply wire 90 b.

In the case of the small-diameter power supply wire 90a, as shown in fig. 8, the small-diameter power supply wire passes through the space under the brim 41a of the first guide portion 41 of the wire attachment portion 22, then passes through the space under the brim 43a of the protrusion 43, and then passes through the space under the brim 42a of the second guide portion 42. And, finally, the power supply wire 90a is extended to the outside of the electrical box 20 through the outlet E formed between the third guide portion 45 and the upper surface 24 a.

On the other hand, in the case of the large-diameter power supply wire 90b, as shown in fig. 9, after passing through the space under the brim 41a of the first guide portion 41 of the wire attachment portion 22, the power supply wire passes through the space formed above the protrusion 43 (i.e., the space between the protrusion 43 and the first side wall 44a), and then passes through the space under the brim 42a of the second guide portion 42. Finally, the power supply wire 90a is extended to the outside of the electrical box 20 through the outlet E formed between the third guide portion 45 and the upper surface 24 a.

As described above, in both the case of the small-diameter power supply wire 90a and the case of the large-diameter power supply wire 90b, the power supply wire 90 passes through the space between the brim 41a of the first guide 41 and the plate-like member 51 and the space between the brim 42a of the second guide 42 and the plate-like member 51. Thus, when the electrical box 20 is mounted on the indoor unit 1, the power supply wire 90 can be prevented from protruding in the horizontal direction of the indoor unit 1. Therefore, the power supply wire 90 can be suppressed from coming into contact with the drive motor or the like mounted adjacent to the electrical box 20.

In the case of the small-diameter power supply wire 90a that is more likely to be displaced from the wire attachment portion 22, the power supply wire 90a can be reliably fixed by the wire attachment portion 22 by passing through the space between the brim portion 43a of the protrusion portion 43 and the plate-like member 51.

Further, since the power supply wire 90b is relatively hard, when the power supply wire 90b having a large diameter is mounted on the wire mounting portion 22, the operator can mount the power supply wire 90b more easily by passing through the space formed above the protrusion 43.

In the above description of the method of attaching the power supply wire 90, the power supply wire 90 is attached to the electrical box 20 from the upstream side thereof. However, the method of attaching the power supply wire 90 to the electrical box 20 is not limited to the above-described procedure. The power supply wire 90 may be attached by a method that allows an operator to attach the power supply wire more efficiently when assembling the product.

The power supply wire 90 is guided in the traveling direction while being in partial contact with the tip end portions of the eaves (the

eaves

41a, 42a, 43a), the third guide portion 45, the body portion of the second guide portion 42, the protrusion 43, the bent portion of the sensing wall 33, and the like. Therefore, as described above, the roundness of each member is imparted in the mounting direction of the power supply wire, so that the power supply wire can be smoothly induced and the possibility of damage to the power supply wire can be reduced.

As described above, the electric box 20 of the present embodiment is provided with the wire attachment portion 22, and thus the power supply wire 90 can be prevented from falling off the electric box 20 during transportation. Therefore, the need for the operator to newly insert the power supply wire 90 during assembly can be reduced, and the workability during assembly can be improved.

Further, according to the electrical box 20 of the present embodiment, the power supply wires 90 of the electrical box 20 can be positioned and arranged without using a separate fixing member. Therefore, when the electrical box or the like is transported at a stage during assembly of the components, the power supply wire 90 can be prevented from being displaced from a predetermined position.

In the electrical box 20 of the present embodiment, the positions of the first guide portion 41, the second guide portion 42, and the projection portion 43 are defined so as to change the traveling direction of the power supply wire 90 passing through the wire attachment portion 22 in the middle. Thereby, the power supply wire 90 is mounted in a state of being bent in the wire mounting portion 22. Therefore, when the plug side of the power supply wire 90 is pulled, the power supply wire can be prevented from moving easily by the wire attachment portion 22, and therefore, the power supply wire 90 can be prevented from coming off or being deviated from the electrical substrate 29.

Further, according to the configuration of the present embodiment, the power supply wire 90 can be prevented from moving to the driving motor side of the fan or the like disposed adjacent to the side surface side of the electrical box 20. Further, by attaching the power supply wire 90 to the wire attaching portion 22, the power supply wire 90 can be disposed at a constant distance from the drive motor. This can prevent the drive motor that generates heat during operation from coming into contact with the power supply wire 90.

In the present embodiment, a configuration in which the XYZ directional electrical box 20 of the indoor unit 1 shown in fig. 3 is attached to the XYZ direction shown in fig. 4 is described. However, the arrangement position of the electrical box 20 with respect to the indoor unit 1 is not limited to this configuration. For example, the XY plane of the electrical box 20 may be arranged along the horizontal plane (XZ plane) of the indoor unit 1.

[ second embodiment ]

A second embodiment of the present invention will be described with reference to fig. 10 to 12. In the second embodiment, the structure of the power supply wire attached to the electrical box is different from that of the first embodiment. The same configuration as that of the first embodiment can be applied to the configuration of the electrical box 20 itself. Therefore, the same reference numerals as those in the first embodiment are given to constituent members to which the same configuration as that in the first embodiment can be applied, and the description thereof is omitted.

In the second embodiment, an example in which the power supply wire 90c with a ferrite core is attached to the electrical box 20 will be described. Ferrite cores are used to cope with the noise of the power supply.

Fig. 10 shows a state in which the power supply wire 90c with a ferrite core is attached to the electrical box 20. Fig. 10 is a diagram showing a left side portion of the case where the electrical box 20 is attached to the indoor unit 1. Fig. 11 shows a state where the electrical box 20 and the power supply wire 90c shown in fig. 10 are viewed from the opposite side. Fig. 11 is a diagram showing a right side portion of the case where the electrical box 20 is attached to the indoor unit 1. Fig. 12 is an enlarged view showing the periphery of the ferrite core arrangement portion 26 of the electrical box 20.

Similarly to the

power supply wires

90a and 90b described in the first embodiment, the power supply wire 90c is led out to the wire attaching portion 22 through a passage between the inductive wall 33 and the upper surface 24 a.

As shown in fig. 10, the power supply wire 90c passes through the space below the brim 41a of the first guide 41 of the wire attachment portion 22, then passes through the space between the protrusion 43 and the first side wall 44a, and is guided to the ferrite core arrangement portion 26 provided on the rear surface side of the wire attachment portion 22.

As shown in fig. 12, the ferrite core 91 is a cylindrical member. The power supply wire 90c extends from the central space of the ferrite core 91 to the plug at the distal end side by being wound around the outer peripheral surface of the ferrite core 91. In the present embodiment, the ferrite core 91 placement portion of the power supply wire 90c is disposed at the ferrite core placement portion 26 of the electrical box 20. As shown in fig. 11, a positioning projection 26a is formed in the space of the ferrite core arrangement portion 26. Thereby, the ferrite core 91 can be arranged in the ferrite core arrangement portion 26 in a stable state.

In addition, a wall portion 46 having a height difference from the plate-like member 51 and formed so as to be positioned substantially parallel to the plate-like member 51 is provided at the ferrite core arrangement portion 26. Thus, when the electrical box 20 having the power supply wire 90c is installed in the indoor unit 1, the movement of the ferrite core 91 in the horizontal direction (the direction intersecting the plate-like member 51) can be restricted.

The power supply wire 90c passing through the ferrite core arrangement portion 26 is then redirected by the third guide portion 45. That is, the power supply wire 90c passing through the ferrite core arrangement portion 26 is restricted in its traveling direction by the third guide portion 45. And, finally, the power supply wire 90c passes through the outlet E formed between the third guide portion 45 and the upper surface 24a and projects to the outside of the electrical box 20. In this way, in the case of the power supply wire with ferrite core 90c, it is guided to the outlet E through the ferrite core arrangement portion 26 without passing through the second guide portion 42.

As described above, by using the electrical box 20, the direction of the ferrite-core-equipped power supply wire 90c can be changed within the electrical box 20, and the ferrite-core-equipped power supply wire 90c can be positioned and arranged. Therefore, even when the plug side of the power supply wire 90c is pulled, the power supply wire 90c can be prevented from coming off or being deviated from the electrical substrate 29.

Depending on the structure of the electrical box 20, the power supply wire 90c passing through the ferrite core arrangement 26 and the

power supply wire

90a or 90b passing through the second guide 42 are both directed through the outlet E to the outside of the electrical box 20. In other words, in any case, the third guide portion 45 guides the electric box 20 to protrude to the outside. In a state where the electrical box 20 is installed in the indoor unit 1, the outlet E is located on the final outlet 13a side of the indoor unit 1. Therefore, it is easy to guide the various

power supply wires

90a, 90b, 90c protruding from the electrical box 20 to the final outlet 13a of the indoor unit 1.

[ third embodiment ]

A third embodiment of the present invention will be described with reference to fig. 13. In the third embodiment, the structure of the electric wire mounting part is different from that of the first embodiment. The configuration other than this can be applied to the same configuration as that of the first embodiment. Hereinafter, the configuration of the wire mounting portion 122 of the electrical box 120 according to the third embodiment will be mainly described. The same reference numerals as those in the first embodiment are given to constituent members to which the same configuration as that in the first embodiment can be applied, and the description thereof is omitted.

Fig. 13 shows a part of an electrical box 120 (a part around a wire mounting portion 122) according to a third embodiment. The electrical box 120 has a wire mounting portion 122. In the electrical box 120, the same configuration as the electrical box 20 of the first embodiment can be applied to configurations other than the electric wire mounting portion 122.

The wire attaching portion 122 mainly includes the plate-like member 51, the first guide portion 41, the second guide portion 42, the protrusion 143, and the side wall portion 44. The plate-like member 51, the first guide portion 41, the second guide portion 42, and the side wall portion 44 can be configured in the same manner as the electrical box 20 of the first embodiment.

The protrusion 143 is disposed between the first guide portion 41 and the second guide portion 42 along the traveling direction of the power supply wire 90. As in the first embodiment, the projection 143 is disposed at a position offset from a virtual straight line connecting the first guide portion 41 and the second guide portion 42 (see fig. 8 and the like). The power supply wire 90 passes above the protrusion 143 and is guided to the second guide 42 and the like. Thus, the protrusion 143 functions to change the traveling direction of the power supply wire 90.

In the first embodiment, a flange-like brim portion 43a is provided at the tip (top) of the protrusion portion 43. In contrast, in the electrical box 120 according to the third embodiment, no eaves are formed at the end (top) of the protrusion 143. That is, the protrusion 143 has a simple cylindrical shape. With this configuration, the power supply wire 90 can be more easily attached to the wire attachment portion 122.

[ fourth embodiment ]

A fourth embodiment of the present invention will be described with reference to fig. 14. In the fourth embodiment, the structure of the electric wire mounting part is different from that of the first embodiment. The configuration other than this can be applied to the same configuration as that of the first embodiment. Hereinafter, the configuration of the electric wire mounting portion 222 of the electric box 220 according to the fourth embodiment will be mainly described. The same reference numerals as those in the first embodiment are given to constituent members to which the same configuration as that in the first embodiment can be applied, and the description thereof is omitted.

Fig. 14 shows an electrical box 220 according to a fourth embodiment. In this figure, a small-diameter power supply cable 90a is attached to the electrical box 220. The electrical box 220 has a wire mounting portion 222. In the electrical box 220, the same configuration as the electrical box 20 of the first embodiment can be applied to configurations other than the electric wire mounting portion 222.

The wire attaching portion 222 mainly includes the plate-like member 51, the first guide portion 41, the second guide portion 42, the protruding portion 243, and the side wall portion 44. The plate-like member 51, the first guide portion 41, the second guide portion 42, and the side wall portion 44 can be configured in the same manner as the electrical box 20 of the first embodiment.

The protrusion 243 is disposed between the first guide portion 41 and the second guide portion 42 along the traveling direction of the power supply wire 90 a. In the first embodiment, the projection 43 protrudes from the plate-like member 51. In contrast, in the electrical box 220 according to the fourth embodiment, the projection 243 projects from the upper surface 24a of the bottom portion 24. As shown in fig. 14, the distance from the upper surface 24a to the tip end of the protrusion 243 is larger than the distance from the upper surface 24a to the first guide portion 41 or the second guide portion 42.

The power supply wire 90a passing through the first guide portion 41 passes above the protrusion portion 243 and is guided to the second guide portion 42 and the like. As shown in fig. 14, the projection 243 functions to change the traveling direction of the power supply wire 90. Therefore, even when the plug side of the power supply wire 90a is pulled, the power supply wire 90a can be prevented from coming off or being deviated from the electrical substrate 29.

In addition, although fig. 14 shows an example in which the small-diameter power supply wire 90a is attached to the electrical box 220, the large-diameter power supply wire 90b or the ferrite core-equipped power supply wire 90c may be attached similarly to the electrical box 20.

[ fifth embodiment ]

Next, a fifth embodiment of the present invention will be explained. In each of the above embodiments, an example in which an electric box is incorporated in an indoor unit of an air conditioner is described. However, the electrical box according to one aspect of the present invention does not necessarily need to be incorporated in an air conditioner, and can be used as an electrical box for other electrical products such as a refrigerator, a washing machine, and a microwave oven.

For example, refrigerators have different designs of power supply wires for products of various countries. Therefore, for refrigerators having the same structure, power supply wires having different diameters are sometimes installed according to the design of each country. As such an electrical box for a refrigerator, by adopting the electrical box according to one embodiment of the present invention, it is possible to provide each of power supply wires having different diameters at an appropriate position.

(conclusion)

In the electrical box according to the above aspect of the present invention, the protrusion may protrude from the plate-like member, and a brim may be provided at a top of the protrusion. According to this configuration, even in the case of a relatively small-diameter wire, the wire can be more reliably prevented from being deviated from the wire mounting portion.

In the electrical box according to the above-described aspect of the present invention, the height of the protrusion may be lower than the height of at least one of the first guide portion and the second guide portion. With this configuration, various wirings having different diameters can be arranged more appropriately.

In the electrical box according to the above-described aspect of the present invention, a side wall portion may be further provided that projects from the plate-like member on a side opposite to a position where the first guide portion and the second guide portion are disposed, with the projection portion being sandwiched therebetween.

In the electrical box according to the above-described aspect of the present invention, a ferrite core arrangement portion in which a ferrite core is arranged may be provided on a downstream side in a traveling direction of the wiring with respect to the protrusion portion, and a third guide portion that restricts the traveling direction of the wiring that passes through the ferrite core arrangement portion may be provided on a further downstream side of the ferrite core arrangement portion. With this configuration, the power supply wire with the ferrite core and the like can be attached to appropriate positions.

In the electrical box, the ferrite core arrangement portion may have a wall portion that restricts movement of the ferrite core in a direction intersecting the plate-shaped member. According to this structure, the ferrite core can be more reliably fixed.

The electrical box may further include an outlet for the wiring, and the wiring whose traveling direction is restricted by the second guide portion and the wiring whose traveling direction is restricted by the third guide portion may be led out to the outside of the electrical box through the outlet. According to this configuration, the wires passing through different paths can be led out from the same outlet to the outside of the electrical box.

The embodiments disclosed herein are illustrative in all respects and should not be considered as limiting the invention. The scope of the present invention is indicated by the claims, rather than the description, and is intended to include meanings equivalent to the scope of protection and all modifications within the scope. The present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the scope of the present invention.

In the first embodiment and the like described above, the plate-like member 51 may be disposed in the vertical direction and the front-rear direction (i.e., YZ plane (see fig. 4 and the like)), and the first guide portion 41, the second guide portion 42, the protrusion portion 43, and the side wall portion 44 may be configured to protrude in the left-right direction (i.e., X direction (see fig. 4 and the like)) from the plate-like member 51. However, in a different aspect of the present invention, the arrangement direction of the plate-like member 51, the first guide portion 41, the second guide portion 42, the protrusion portion 43, and the side wall portion 44 is also different from that of the first embodiment described above.

For example, in one embodiment of the present invention, the plate-like member 51 may be disposed in the left-right direction and the front-rear direction (i.e., the XZ plane (see fig. 4, etc.)), and the first guide portion 41, the second guide portion 42, the protrusion 43, and the side wall portion 44 may be configured to protrude from the plate-like member 51 in the up-down direction (i.e., the Y direction (see fig. 4, etc.)). Also in a different manner, it is also possible to use the upper surface 24a of the bottom portion 24 constituting the bottom portion of the electrical box 20 as a plate-like member. In this case, the first guide portion, the second guide portion, the protrusion portion, the side wall portion, and the like are disposed on the plate-like member inclined in the front-rear direction (i.e., the Z direction (see fig. 4 and the like)). In this way, the arrangement direction of the members (i.e., the plate-like member, the first guide portion, the second guide portion, the protruding portion, the side wall portion, and the like) constituting the wire attaching portion does not need to be strictly in any of the vertical direction, the horizontal direction, and the front-rear direction, and may be inclined.

Description of the reference numerals

1: indoor unit (of air conditioner)

20: electrical box

21: substrate setting part

22: wire mounting part (Wiring mounting part)

26: ferrite core arrangement part

41: first guide part

41 a: eave part

42: second guide part

42 a: eave part

43: protrusion part

43 a: eave part

44: side wall part

45: third guide part

46: wall part

51: plate-like member

90: power supply wire (Wiring)

91: ferrite magnetic core

120: electrical box

122: wire mounting part (Wiring mounting part)

143: protrusion part

220: electrical box

222: wire mounting part (Wiring mounting part)

243: protrusion part

E: an outlet

Claims

1. An electrical box for housing an electrical substrate, comprising:

a substrate installation part, which is provided with an electric device substrate; and

a wiring mounting portion to which a wiring connected to the electric substrate is mounted,

the wiring installation part is provided with:

a plate-like member;

a first guide portion protruding from the plate-like member and arranged on an upstream side of the wiring;

a second guide portion protruding from the plate-like member and arranged on a downstream side of the wiring; and

a protrusion portion that is disposed between the first guide portion and the second guide portion and changes a traveling direction of the wiring,

the first guide part and the second guide part are respectively provided with a brim part on the top part,

the protrusion portion protrudes from the plate-shaped member and is provided with a brim portion at a top thereof,

a distance between the plate-like member and the eaves of the protrusions is smaller than at least one of a distance between the plate-like member and the eaves of the first guide and a distance between the plate-like member and the eaves of the second guide,

the wires having a small diameter are arranged between the plate-like member and the eaves of the protrusions, and the wires having a large diameter are arranged outside a space between the plate-like member and the eaves of the protrusions.

2. The electrical box of claim 1,

a side wall portion that sandwiches the protruding portion therebetween and protrudes from the plate-like member on a side opposite to a position where the first guide portion and the second guide portion are arranged is further provided.

3. The electrical box according to claim 1 or 2,

a ferrite core arrangement portion in which a ferrite core is arranged is provided on a downstream side in a traveling direction of the wiring with respect to the protrusion portion, and

a third guide portion that restricts a traveling direction of the wiring passing through the ferrite core arrangement portion is provided further downstream of the ferrite core arrangement portion.

4. The electrical box of claim 3,

the ferrite core arrangement portion has a wall portion that restricts movement of the ferrite core in a direction intersecting the plate-like member.

5. The electrical box of claim 3,

and also has an outlet for the wiring,

the wiring whose traveling direction is restricted by the second guide portion and the wiring whose traveling direction is restricted by the third guide portion are led out to the outside of the electrical box through the outlet.